Chevrolet 10 Series 1968, Service Manual, Page: 141 / 713

FRONT SUSPENSION 3-2
LOW ER C O N TR O L ARM
UPPER
C O N T R O L ARM
FRO N T HUB
A N D BRAKE
DRUM
Fig. 1—Independent Front Suspension
thus the lower control arm is the load carrying member.
The double acting shock absorbers are also attached to
the lower control arms and connect with the frame to the
rear on the upper end. The forward control P - 10-20-30
series is equipped with a stabilizer bar connected to the
lower control arm and transversely mounted to the frame
side members. The front wheel bearings are tapered
roller type on the above models.
The I-Beam axles used on all 40-60 Series are of the
conventional reverse Elliott type, with solid kingpins and
glass filled polycarbonate or delrin bushed steering
knuckles. The springs are Chevrolet Vari-Rate, bushed
at the front eye only and mounted to a rigid hanger. The
rear end of the spring rides in a special hanger designed
to provide a relatively low spring rate at curb loads with
increased rate at higher loads.
Front wheel bearings are tapered roller type on all
models.
The Chevy Van front suspension (fig. 3) incorporates
the “ I-Beam” type front axle; tapered leaf springs; and
direct-acting hydraulic shock absorbers.
The “ I-Beam” axle is of the conventional reverse
Elliott type, with spring and steering stop screw seats
forged integral with the “ I-Beam” . Constant diameter,
solid kingpins are used with the full-floating, glass filled
polycarbonate, steering knuckle bushing. Front wheel
spindles are cast integral with the steering knuckles;
front wheel bearings are tapered roller type.
The front spring assembly incorporates the berlin-type
spring eyes. The front eye is single-wrapped and has a
rubber insulated steel bushing through which the spring
is bolted to the spring front hanger. The rear eye is
shackle mounted through rubber bushings to the spring
rear hanger.
The K series “ Four-Wheel Drive” vehicles incorpo­
rate a driving front axle, tapered leaf springs, and
direct-acting hydraulic shock absorbers.
Service operation may be found at the back of this sec­
tion. Front axle differential will be found in Section 3
Truck Overhaul. The adapter and transfer case are cov­
ered in Section 7 Truck Overhaul.
MAINTENANCE AND ADJUSTMENTS
WHEEL BEARINGS—ADJUST
10 Series and Chevy Van
1. Jack up front end of vehicle and remove wheel and
tire assembly. Remove dust cap from end of hub and
withdraw spindle cotter pin.
2. Tighten adjusting nut to 15 lb. ft. while rotating hub
in both directions.
3. Back off nut one flat (1/6 turn) and insert new cotter
pin. If nut and spindle hole do not line up, back off
slightly (1/6 turn) to align cotter pin. This adjust­
ment provides for
.000" to .007" bearing end
clearance.
4. Spin hub to make sure it turns freely. Lock cotter
CHEVROLET TRUCK SERVICE MANUAL